"About 20 minutes later help arrived in the form of two Chinook helicopters under contract to the Texas Forest Service, which flew dozens of sorties over the park dumping tons of water taken from a small lake on the park's golf course," the agency says.

"When the operation ended about an hour later the billowing black smoke was gone and incident commander Robert Crossman said the operation had made a significant impact on the fire," TPWD added.